Concise Antispam
by Concise Studio on WordPress.org
Very simple antispam plugin. Users do not need to enter any captcha, working completely on background. No need to administer: just install the plugin …
(2)
Algorithm
- Plugin generates token on the backend side.
 - Plugin adds hidden field for token in each form which will use method “POST” after rendering of the page.
 - Plugin inserts token in the field after user’s interaction with site.
 
For developers
Antispam will automatically check submissions of the regular forms but ignores all AJAX requests.
If you want to change this behaviour, you can use filter concise_antispam_need_to_validate_token.
See example:
Disable Antispam for some forms:
add_filter("concise_antispam_need_to_validate_token", function($needToValidateToken) {
    if (!empty($_POST['do-not-check-antispam-token'])) {
        $needToValidateToken = false;
    }
    return $needToValidateToken;
});
You can also always manually call \Concise\Antispam::validateTokenOrDie() in your custom handler.
Formidable Forms integration
For proper work disable the honeypot checking in the forms
Active installations30+
Weekly downloads
10+11.11%
Version1.0.13
Last updated11/1/2022
WordPress version4.1
Tested up to6.0.9
PHP version5.6
Tags
anti-spamantispamspam